Open AccessCoil geometry effects on scanning single-coil magnetic induction tomography
Author(s) -
Joe R. Feldkamp,
Stephen Quirk
Publication year - 2017
Publication title -
physics in medicine and biology/physics in medicine and biology
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.312
H-Index - 191
eISSN - 1361-6560
pISSN - 0031-9155
DOI - 10.1088/1361-6560/aa807b
Subject(s) - electromagnetic coil , eddy current , electromagnetic induction , acoustics , straddle , nuclear magnetic resonance , noise (video) , feature (linguistics) , computer science , optics , physics , materials science , electrical engineering , artificial intelligence , image (mathematics) , engineering , linguistics , philosophy , finance , economics
Alternative coil designs for single coil magnetic induction tomography are considered in this work, with the intention of improving upon the standard design used previously. In particular, we note that the blind spot associated with this coil type, a portion of space along its axis where eddy current generation can be very weak, has an important effect on performance. The seven designs tested here vary considerably in the size of their blind spot. To provide the most discerning test possible, we use laboratory phantoms containing feature dimensions similar to blind spot size. Furthermore, conductivity contrasts are set higher than what would occur naturally in biological systems, which has the effect of weakening eddy current generation at coil locations that straddle the border between high and low conductivity features. Image reconstruction results for the various coils show that coils with smaller blind spots give markedly better performance, though improvements in signal-to-noise ratio could alter that conclusion.